Finally I compare inspector objects by their entry id:

_Inspector *pInspector;

// get entry id
CComPtrIDispatch pDispCurrentItem;
HRESULT hr = pInspector-get_CurrentItem(&pDispCurrentItem);
if (FAILED(hr)) { ReportError(hr); return NULL; }

CComQIPtr_MailItem pMailItem(pDispCurrentItem);
if (!pMailItem) { ReportError(E_POINTER); return NULL; }

CComPtrIUnknown pUnkMessage;
hr = pMailItem-get_MAPIOBJECT(&pUnkMessage);
if (FAILED(hr)) { ReportError(hr); return NULL; }

CComQIPtrIMessage, &IID_IMessage pMessage(pUnkMessage);
if (!pMessage) { ReportError(E_POINTER); return NULL; }

SPropValue *pProp = NULL;
hr = HrGetOneProp(pMessage, PR_ENTRYID, &pProp);
if (FAILED(hr)) { ReportError(hr); return NULL; }

Now pProp-Value.bin has the entry id. To check if two entry ids are
equal:

// get compare function
CComPtr_NameSpace pSession;
hr = pInspector-get_Session(&pSession);
if (FAILED(hr)) { ReportError(hr); return NULL; }

CComPtrIUnknown pUnkSession;
pSession-get_MAPIOBJECT(&pUnkSession);
if (FAILED(hr)) { ReportError(hr); return NULL; }

CComQIPtrIMAPISession, &IID_IMAPISession
pMAPISession(pUnkSession);
if (!pMAPISession) { ReportError(E_POINTER); return NULL; }

pMAPISession-CompareEntryIDs() is used to compare ids.

Comparing the IUnknown pointers of two _Inspector interfaces does not
work for C++.


On Sep 5, 3:14 pm, "Ken Slovak - [MVP - Outlook]"
wrote:
It's just a comparison of the COM objects, just a normal C# equality
comparison. It's just that the Outlook team fixed Explorers and Inspectors
so that works in Outlook 2007.

--
Ken Slovak
[MVP - Outlook]http://www.slovaktech.com
Author: Professional Programming Outlook 2007
Reminder Manager, Extended Reminders, Attachment Optionshttp://www.slovaktech.com/products.htm

"gernot" wrote in message

ups.com...



How does C# implement the == operator? It must be more than just
comparing COM objects.
The workaround with FindWindow() is alright ;-)

Thanks, Gernot- Hide quoted text -

- Show quoted text -

MAPI entry ids may not exist before the item is saved. In this case I
use the creation time to identify the item.

On Sep 8, 2:04 am, gernot wrote:
Finally I compare inspector objects by their entry id:

_Inspector *pInspector;

// get entry id
CComPtrIDispatch pDispCurrentItem;
HRESULT hr = pInspector-get_CurrentItem(&pDispCurrentItem);
if (FAILED(hr)) { ReportError(hr); return NULL; }

CComQIPtr_MailItem pMailItem(pDispCurrentItem);
if (!pMailItem) { ReportError(E_POINTER); return NULL; }

CComPtrIUnknown pUnkMessage;
hr = pMailItem-get_MAPIOBJECT(&pUnkMessage);
if (FAILED(hr)) { ReportError(hr); return NULL; }

CComQIPtrIMessage, &IID_IMessage pMessage(pUnkMessage);
if (!pMessage) { ReportError(E_POINTER); return NULL; }

SPropValue *pProp = NULL;
hr = HrGetOneProp(pMessage, PR_ENTRYID, &pProp);
if (FAILED(hr)) { ReportError(hr); return NULL; }

Now pProp-Value.bin has the entry id. To check if two entry ids are
equal:

// get compare function
CComPtr_NameSpace pSession;
hr = pInspector-get_Session(&pSession);
if (FAILED(hr)) { ReportError(hr); return NULL; }

CComPtrIUnknown pUnkSession;
pSession-get_MAPIOBJECT(&pUnkSession);
if (FAILED(hr)) { ReportError(hr); return NULL; }

CComQIPtrIMAPISession, &IID_IMAPISession
pMAPISession(pUnkSession);
if (!pMAPISession) { ReportError(E_POINTER); return NULL; }

pMAPISession-CompareEntryIDs() is used to compare ids.

Comparing the IUnknown pointers of two _Inspector interfaces does not
work for C++.

On Sep 5, 3:14 pm, "Ken Slovak - [MVP - Outlook]"
wrote:



It's just a comparison of the COM objects, just a normal C# equality
comparison. It's just that the Outlook team fixed Explorers and Inspectors
so that works in Outlook 2007.

--
Ken Slovak
[MVP - Outlook]http://www.slovaktech.com
Author: Professional Programming Outlook 2007
Reminder Manager, Extended Reminders, Attachment Optionshttp://www.slovaktech.com/products.htm

"gernot" wrote in message

oups.com...

How does C# implement the == operator? It must be more than just
comparing COM objects.
The workaround with FindWindow() is alright ;-)

Thanks, Gernot- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -